Official Answer Key & Detailed Solution
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Correct Answer: Option (B) — A-1; B -4; C-2; D-3
Concept & Option Breakdown
Standard Reference Verified- Graphite (A): Associated with Bellary (1) in Karnataka.
- Lead (B): Zawar mines (4) in Udaipur, Rajasthan are famous for lead and zinc.
- Salt (C): Didwana (2) in Rajasthan is a well-known inland salt lake and salt-producing center.
- Silver (D): Historically extracted as a byproduct in Rampa / Visakhapatnam region (3) in Andhra Pradesh.
Matching: A-1, B-4, C-2, D-3.
Zawar in Rajasthan is India's most famous Lead-Zinc mine (B-4) and Didwana is a famous saline playa lake for salt (C-2), which immediately singles out option (b).
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